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Synthesis of Carbamates and Ureas Using Zr(IV)-Catalyzed Exchange Processes

Chong Han and John A. Porco, Jr*

*Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, Email: porcobu.edu

C. Han, J. A. Porco, Jr, Org. Lett., 2007, 9, 1517-1520.

DOI: 10.1021/ol0702728 (free Supporting Information)


Abstract

Zirconium(IV)-catalyzed exchange processes of dialkyl carbonates and carbamates in the presence of amines gave carbamates and ureas using 2-hydroxypyridine (HYP) and 4-methyl-2-hydroxyquinoline (MeHYQ) as catalytic additives, respectively. A microwave acceleration effect was observed in Zr(IV)-catalyzed carbamate-urea exchange.

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Key Words

Carbamates, Ureas, Microwave Synthesis


ID: J54-Y2007-1120